Shield-nozzle



(No Model.)

W-. F. CUNNINGHAM.

SHIELD NOZZLE.

No. 563,454. Patented July 7, 1896.

fiwezzzor: W

Wz'frzesses all? UNITED STATES PATENT OFFICE.

WILLIAM F. CUNNINGHAM, OF BROOKLYN, NEWV YORK.

. SHIELD-NOZZLE.

SPECIFICATION forming part of Letters Patent 563,454, dated July 7,1896.

Application fi'led December 28, 1895. Serial No. 573,603. (No model.)

To aZZ whom, it may concern.-

Be it known that 1, WILLIAM F. CUNNING- HAM, of Brooklyn, in the countyof Kings and State of New York, have invented a new and usefulImprovement in Shield-Nozzles, of which the following is aspecification.

My invention relates to an improvement in shield-nozzles for directing asheet of water radially from the nozzle to protect the fireman or personcarrying the nozzle through fire or smoke.

A practical embodiment of my invention is represented in theaccompanying drawings, in which- Figure 1 is a view of the nozzle inlongitudinal section. Fig.2 is an end view. Fig. 3 is a view in sideelevation of the parts in the position which they assume when the portsfor discharging the sheet of water are open. Fig. 4 is a transversesection through line 4 4 of Fig. 3, and Fig. 5 is a transverse sectionthrough line 5 5 of Fig. 3.

The body of the nozzle is denoted by A, and consists of a cylindricalbase portion for attachment to the hose and a tapered end a fordirecting a stream of water, as is usual.

Intermediate of the small end of the tapered portion and the cylindricalbase the body A is provided with transversely-elongated ports I) b c c,the ports I) I) being located in the present instance diametricallyopposite each other and the ports 0 0 being located diametricallyopposite each other, the ports I) b c 0' being in length somewhat lessthan a quadrant and the ports I) bbeing located in a differenttransverse plane from that in which the ports 0 c are located.

On the exterior of the tapered portion a of the nozzle there is fitted atapered sleeve D, provided with ports 13 B C 0, corresponding,respectively, to the ports I) b c c in the body of the nozzle, and twoof them at leastviz., C O--preferably having a forward inclination asthey extend outwardly through the sleeve. The lengths of the ports BB 0Ccorrespond at the inner surface of the sleeve with the lengths of thecorresponding ports in the body of the nozzle at the exterior surface ofthe nozzle and from thence the end walls of the ports in the sleevediverge, keeping up, preferably, the same degree of divergence as theend walls of the ports in the body of the nozzle assume in extendingfrom the interior of the body of the nozzle to its exterior until uponreaching the exterior surface of the sleeve the ends of the ports BBextend to or overlap the ends of the ports 0 0, but in differenttransverse planes.

The sleeve is held in position on the tapered portion of the body of thenozzle by means of a nut E, and a washer e of some suitable material isinterposed between the nutE and the small end of the sleeve. The sleeveD is permitted a rotary movement on the body of the nozzle, sufficientto throw the ports in the sleeve completely out of register with theports in the body of the nozzle in order to cutoff the sheet of waterand turn it on at pleasure. To relieve the operator of .any delay indetermining what the rotary movement for cutting off and turning on thesheet of water shall be, I provide a stud or pin a set in the interiorface of the body of the nozzle and provide a recess d in the edge of thesleeve to receive the stud or pin a, the ends of the recess 61 servingas abutments to engage the stud or pin a at the opposite limits of therotary movement of the sleeve D to cut off or turn on the sheet ofwater. For convenience in operating the sleeve, I provide it withhandles d, consisting in the present instance of lugs or studsprojecting outwardly from its exterior face upon diametrically oppositesides of the face.

In operation, when it is desired to carry the hose through a room filledwith fire or smoke, the sleeve D is rotated in a direction to turn onthe sheet of water and the latter issues in a solid sheet completelysurrounding the nozzle and forminga wall of water in front of the personcarrying the nozzle to shield him from the effects of the fire andsmoke. When it is desired to use the nozzle without the sheet of waterissuing therefrom, the sleeve D is given a rotary movement in theopposite direction to cut off the discharge.

What I claim is g l. The shield-nozzle comprising a tapered body portionprovided with transversely-elongated ports therethrough, the said portsbeing located in different transverse planes a tapered sleeve fitted onthe body portion and provided with ports therethrough corresponding tothe ports in the body portion, a nut ports in the tapered sleeve havingtheir end walls made to diverge as they extend ont- Wardly and theportions of the ports at the exterior of the sleeve being located indiffer- 15 cent transverse planes, substantially as set forth.

VVILLIAM F. CUNNINGHAM.

lVitnesses:

FREDK. HAYNES, GEORGE BARRY, Jr.

